The Angolan kwanza (Portuguese: kwanza angolano; sign: Kz; code: AOA) is the currency of Angola. It is subdivided into 100 cêntimos. The currency was first introduced in 1977, and four different kwanza currencies have been introduced since then.

The first issue of coins was introduced in 1977. All of these coins bore a legend on the obverse reading "11 DE NOVEMBRO DE 1975" (November 11, 1975), which was the date of Angola's independence, and the Angolan coat of arms. The coins were composed of cupronickel, and came in denominations of 50 lwei, 1, and 10 kwanza. In 1978, cupronickel 2, 5, 20 kwanza and copper50 kwanza coins were introduced, followed by a copper 100 kwanza coin in 1979 and a copper-clad steel 50 kwanza commemorative coin in 1992.

In 1977, banknotes (dated 1976) were introduced by the Central Bank of Angola in denominations of 20, 50, 100, 500, and 1000 kwanza. Specimen varieties of these notes were also known to have been printed. In 1978, the 20 kwanza note was replaced by a coin of the same value. A year later, in 1979, a new issue of these notes was printed, which bore the signature of a new central bank governor.

In 1990, the novo kwanza ("new kwanza") was introduced, with an ISO 4217 code of AON. Even though it replaced the original kwanza at par, Angolans could only exchange 5% of all old notes for new ones; they had to exchange the rest for government securities. The novo kwanza suffered from high inflation, and came to an abrupt halt on June 30, 1995.

The first banknotes, issued in 1990, were overprints on banknotes from the first kwanza in denominations of 50, 500, 1000, and 5000 novo kwanza. In 1991, the word "novo" was dropped from the banknotes, and an issue consisting of 100, 500, 1000, 5000, 10,000, and 50,000 was issued. In 1993, the 100,000 kwanza note was introduced, followed by the 500,000 kwanza note in 1994.

On July 1, 1995, the Angolan kwanza reajustado ("readjusted kwanza") was introduced, with the ISO 4217 code, AOR. It replaced the previous kwanza at a rate of 1 kwanza reajustado = 1000 novos kwanzas. The inflation continued, and no coins were issued. The readjusted currency was issued until November 30, 1999.

The banknotes of the kwanza reajustado were similar in appearance to the notes of the novo kwanza. They were issued in denominations of 1000, 5000, 10,000, 50,0000, 100,000, 500,000, 1,000,000, and 5,000,000 kwanza.

On December 1, 1999, the second kwanza was introduced, having an ISO 4217 code of AOA. It is subdivided into 100 cêntimos. The second kwanza reintroduced coined currency, though it suffered from inflation early on. The value has since been stabilized.

In 1999, a series of coins consisting of copper-plated steel 10 and 50 cêntimos, and nickel-plated steel 1, 2, and 5 kwanzas was introduced. The 10 and 50 cêntimo coins are no longer used due to having minuscule values, even though they are still legal tender. Also in 1999, two commemorative 10 kwanza coins and a commemorative silver 100 kwanza coin were introduced.

On December 1, 1999, banknotes in denominations of 1, 5, 10, 50, and 100 kwanza were introduced. These were followed by 200, 500, and 1000 kwanza notes on July 19, 2004, and the 2000 kwanza note in 2006. All of these banknotes are similar in design, with each depicting PresidentsAgostinho Neto and José Eduardo dos Santos on the obverse. Therefore, these banknotes can only be easily distinguished by their colors.